package com.lcsolute.admin.config;

import com.lcsolute.admin.filter.JwtAuthenticationTokenFilter;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter{

    @Autowired
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
    
    // 创建 BCryptPasswordEncoder 注入容器
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Autowired
    private AuthenticationEntryPoint authenticationEntryPoint;

    @Autowired
    private AccessDeniedHandler accessDeniedHandler;

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        // TODO Auto-generated method stub
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .csrf().disable() // 关闭 csrf
            .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS) // 不通过 Session 获取 SecurityContext
            .and()
            .authorizeRequests()
            .antMatchers("/user/login", "/video/hotVideoList").anonymous() // 对于登录接口 允许匿名访问
            .anyRequest().authenticated(); // 除上面外的所有请求全部需要鉴权认证

        // 添加异常处理器
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        
        // 配置异常处理器
        http.exceptionHandling()
            .authenticationEntryPoint(authenticationEntryPoint)
            .accessDeniedHandler(accessDeniedHandler);

        // 运行跨域
        http.cors();
    }
}
